What is the probability that a student who plays an instrument is not in band? Band Not in band Total Play instrument 20 25 Don't play instrument 25 25 Total 20 30 50

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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В.
C.
OD.
四S g
A.
Transcribed Image Text:В. C. OD. 四S g A.
What is the probability that a student who plays an instrument is not in band?
Band Not in band Total
Play instrument
20
25
Don't play instrument
25
25
Total
20
30
50
Transcribed Image Text:What is the probability that a student who plays an instrument is not in band? Band Not in band Total Play instrument 20 25 Don't play instrument 25 25 Total 20 30 50
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